winforms - LINQ Select mutiply columns as data source for combobox C# -

i have combobox must contain list of clients from(client table) own estate(estate table). both tables contains clientid fields. want clientid estate table valuemember , client name client table displaymember of combobox this:

        clientcombobox.datasource = ownerquery;         clientcombobox.displaymember = "clientname";         clientcombobox.valuemember = "clientid"; 

i have query gives me clientname:

 var ownerquery = (from own in agencycontext.client             join clname in agencycontext.estate on own.clientid equals clname.clientid             select own.clientname); 

how can clientid , clientname form 1 query source combobox.

change:

var ownerquery = (from own in agencycontext.client             join clname in agencycontext.estate on own.clientid equals clname.clientid             select own.clientname); 

to:

var ownerquery = (from own in agencycontext.client             join clname in agencycontext.estate on own.clientid equals clname.clientid             select own);